Hi Shivers,
Do you have a Windows or a Mac ?
What is the resolution of your project?
It should be Height(EVEN) x Width (EVEN).
If anyone of above is in odd number then create a backup of your project and rescale the project to make Height and Width to be even number (Just increment or Decrement by 1 to make them even)
See if this works for you.
Thanks and Regards
Himanshu Satija